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부품번호 | ACE707A 기능 |
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기능 | Micro Power Step-up DC-DC Converter | ||
제조업체 | ACE Technology | ||
로고 | |||
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ACE707A
Technology
Micro Power Step-up DC-DC Converter
Description
The ACE707A are Pulse Frequency Modulation (PFM) DC/DC converters. These two devices are
functionally equivalent except the switching current limit. The ACE707A is for lower power systems with
100mA current limit.
The ACE707A feature a wide input voltage. The operation voltage is ranged from 1V to 12V. A current
limited, fixed off-time control scheme conserves operating current, resulting in high efficiency over a broad
range of load current. They also feature low quiescent current, switching current limiting, low temperature
coefficient, etc.
Fewer tiny external components are required in the applications to save space and lower cost.
Furthermore, to ease its use in different systems, a disable terminal is designed to turn on or turn off the
chip.
The ACE707A are available in SOT-23-5 package.
Features
• Low Quiescent Current In Active Mode (Not Switching): 17μA Typical ,In Shutdown Mode: < 1μA
• Low Operating VIN 1.0V Typical for ACE707A
• Low VCESAT Switch 70mV Typical at 70mA for ACE707A
• High Output Voltage: up to 34V
• Fixed Off-Time Control
• Switching Current Limiting 100mA Typical for ACE707A
• Operating Temperature Range: -40℃ to 85℃
Application
• MP3, MP4
• Battery Power Supply System
• LCD/OLED Bias Supply
• Handheld Device
• Portable Communication Device
VER 1.2 1
www.DataSheet4U.com
ACE707A
Technology
Micro Power Step-up DC-DC Converter
Electrical Characteristics
VIN=VSHDN=1.2V, TA=25℃, unless otherwise specified.
Parameter
Symbol Test Conditions
Input Voltage
Quiescent Current
VIN
IQ
Not Switching
VSHDN=0V
Feedback Voltage
FB Comparator Hysteresis
FB Pin Bias Current
Output Voltage Line Regulation
Switching Current Limit
Switch Saturation Voltage
Switch Off Time
VFB
VFBH
IFB
LNR
IL
VCESAT
TOFF
VFB=1.23V
1.2V<VIN<12V
ISW=70mA
VFB>1V
VFB<0.6V
SHDN Input Threshold High
VTH
SHDN Input Threshold Low
SHDN Pin Current
Switch Leakage Current
VTL
ISHDN
ISWL
VSHDN=1.2V
VSHDN=5V
Switch Off, VSW=5V
Min Typ Max
1.0 12
17 30
1
1.205 1.23 1.255
8
30 80
0.05 0.1
75 100 125
70 120
400
1.5
0.9
0.25
23
8 12
0.01 5
Unit
V
μA
V
mV
nA
%/V
mA
mV
nS
μS
V
μA
μA
VER 1.2 4
4페이지 www.DataSheet4U.com
ACE707A
Technology
Micro Power Step-up DC-DC Converter
The ACE707A contain additional circuitry to provide protection during start-up or under short-circuit
conditions. When the FB pin voltage is lower than approximately 0.6V, the switch off-time is increased to
1.5μs and the current limit is reduced to about 250mA (70mA for ACE707A). This reduces the average
inductor current and helps to minimize the power dissipation in the ACE707A power switch, in the
external inductor and in the diode.
The SHDN pin can be used to turn off the ACE707A and reduce the IQ to less than 1μA. In shutdown
mode the output voltage will be a diode drop below the input voltage.
Typical Application
Vin L1
2.5V to 4.2V
10uH
D1
SS14
Vout
20V
C1
4.7 uF
Vin SW
ACE707A
SHEN
FB
GND
R1
2M
R2
130K
C2
1uF
RLOAD
C1, C2: X5R or X7R Ceramic Capacitor
L1: SUMIDA CDRH4D16FB/NP-100MC or Equivalent
Figure 11. ACE707A Typical Application in LCD/OLED Bias Supply
ACE707A
C1, C2, C3: X5R or X7R Ceramic Capacitor
L1: SUMIDA CDRH4D16FB/NP-100MC or Equivalent
Figure 12. ACE707A Typical Application in 1 or 2 Cells to 3.3V Boost Converter
VER 1.2 7
7페이지 | |||
구 성 | 총 9 페이지수 | ||
다운로드 | [ ACE707A.PDF 데이터시트 ] |
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구매 문의 | 일반 IC 문의 : 샘플 및 소량 구매 ----------------------------------------------------------------------- IGBT, TR 모듈, SCR 및 다이오드 모듈을 포함한 광범위한 전력 반도체를 판매합니다. 전력 반도체 전문업체 상호 : 아이지 인터내셔날 사이트 방문 : [ 홈페이지 ] [ 블로그 1 ] [ 블로그 2 ] |
부품번호 | 상세설명 및 기능 | 제조사 |
ACE707A | Micro Power Step-up DC-DC Converter | ACE Technology |
DataSheet.kr | 2020 | 연락처 | 링크모음 | 검색 | 사이트맵 |